BA 1349 then BA 834 at Heathrow
Saint Helier → London → Dublin
Timetable, London time
16:20BA 1349 from Saint Helier at the gate
15:25BA 834 to Dublin leaves the gate
23 h 05 apart on the timetable, overnight
BA 834 leaves 23 h 05 after BA 1349 arrives on the timetable: more than half a day, so not a connection we count.